for analysis we'll bring in the "washington post's" david ignatius. tom ricks, august of can the gen. and our own bob orr and margaret brennan. and we'll have a farewell interview with maine's republican senator olympia snowe, who's leaving the senate because she no longer felt it was a place she could get anything done. it's been a wild week, but we'll try to put it in perspective on "face the nation." captioning sponsored by cbs from cbs news in washington, "face the nation" with bob schieffer. >> schieffer: and good morning again. we want to get right to the story in the middle east. , israel continuing to amass troops on the period with gaza. three israelis are dead, more than 50 wounded by rocket fire. the airstrikes go on. the question now, will the israelis send their ground troops into gaza? we're going first this morning to alan pizzey who is in tel aviv. allen. >> reporter: good morning, bob. overnight the israelis continued to pound positions in gaza. they've expand their operation away from just purely military targets into the hamas infra